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Lewis acid-assisted high-speed living anionic

Fig. 11. The basic concept of the Lewis acid assisted high-speed living anionic polymerization of methacrylic esters... Fig. 11. The basic concept of the Lewis acid assisted high-speed living anionic polymerization of methacrylic esters...
An example of the Lewis acid assisted high-speed living anionic polymerization is given by the polymerization of methyl methacrylate (21, R = Me) initiated with (TPP)AlMe (la) [(MMA)o/(la)o = 217] in CH2CI2. The polymerization at 35°C under irradiation with visible light (>420nm) proceeds to attain only 6.1% monomer conversion in 2.5 hours. On the other hand, upon addition of a... [Pg.148]

Lewis acid-assisted high-speed living anionic polymerization can be applied not only to the accelerated synthesis of naiTOw MWD poly(methacrylic esters) but also to the synthesis of polyethers from epoxides (11) and polyesters from lactones (14 and 15) with aluminum porphyrins as initiators. Furthermore, ring-opening polymerization of episulfides (18) with zinc AT-substituted porphyrins (5) can also be accelerated by Lewis acids. [Pg.149]

See other pages where Lewis acid-assisted high-speed living anionic is mentioned: [Pg.148]    [Pg.149]    [Pg.150]    [Pg.148]    [Pg.149]    [Pg.150]    [Pg.79]    [Pg.42]   


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High-speed

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